Does anyone know anything about api's and soap?

I am using a program called publicaster for eblasting, they host a db full of our email addresses. Within thier emails I send out I can forward to a friend, they have something called an API I can use to set up the forward to a friend on my website because our exchange server will not let us do this internally. They have sent me links and told me to figure it out, but I have no clue how to make this work.
I am posting the links I have been sent along with my current code for my refer a friend which currently I am putting them in a db and doing manually. Thanks for anyones help.
 I am using asp if that helps any.

"Hi Kelly,
Here is all the information you should need:

General API documentation:
http://app.publicaster.com/SDK/SubscriberMgmt/Subscribers.asmx 

Forward to Friend API documentation:
http://api.publicaster.com/sdk/forwardfriend/forwardtoFriend.asmx 


Blog post on setting up your Forward to Friend API:
http://thinkinginbox.com/publicaster/new-publicaster-api-forward-to-a-friend 
"

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                            &nbsp;
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<td style="font-family: Arial; color: #FF0000">Join our mailing list</td>
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<td colspan="2" 
        style="font-family: Arial; color: #333333; clip: rect(auto, auto, auto, auto); text-align: justify;">Be the first on the block to hear about our new product launches, celebrity appearances,&nbsp;events and special&nbsp;promotions.To join
    our private eMail list, please click below.</td>
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<INPUT TYPE="button" 
    style="background-color: #C0C0C0; font-family: Arial; font-size: small; color: #000000; float: right; width: 150px; height: 25px;" 
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